5 files changed, 119 insertions, 0 deletions
diff --git a/example/common/CGAL_3D_points_off_reader.cpp b/example/common/CGAL_3D_points_off_reader.cpp
new file mode 100644
index 00000000..d48bb17d
--- /dev/null
+++ b/example/common/CGAL_3D_points_off_reader.cpp
@@ -0,0 +1,41 @@
+#include <gudhi/Points_3D_off_io.h>
+
+#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
+
+#include <iostream>
+#include <string>
+#include <vector>
+
+using Kernel = CGAL::Exact_predicates_inexact_constructions_kernel;
+using Point_3 = Kernel::Point_3;
+
+void usage(char * const progName) {
+  std::cerr << "Usage: " << progName << " inputFile.off" << std::endl;
+  exit(-1);
+}
+
+int main(int argc, char **argv) {
+  if (argc != 2) {
+    std::cerr << "Error: Number of arguments (" << argc << ") is not correct" << std::endl;
+    usage(argv[0]);
+  }
+
+  std::string offInputFile(argv[1]);
+  // Read the OFF file (input file name given as parameter) and triangulate points
+  Gudhi::Points_3D_off_reader<Point_3> off_reader(offInputFile);
+  // Check the read operation was correct
+  if (!off_reader.is_valid()) {
+    std::cerr << "Unable to read file " << offInputFile << std::endl;
+    usage(argv[0]);
+  }
+
+  // Retrieve the triangulation
+  std::vector<Point_3> point_cloud = off_reader.get_point_cloud();
+
+  int n {0};
+  for (auto point : point_cloud) {
+    ++n;
+    std::cout << "Point[" << n << "] = (" << point[0] << ", " << point[1] << ", " << point[2] << ")\n";
+  }
+  return 0;
+}
diff --git a/example/common/CGAL_points_off_reader.cpp b/example/common/CGAL_points_off_reader.cpp
new file mode 100644
index 00000000..d1ca166d
--- /dev/null
+++ b/example/common/CGAL_points_off_reader.cpp
@@ -0,0 +1,46 @@
+#include <gudhi/Points_off_io.h>
+
+// For CGAL points type in dimension d
+// cf. http://doc.cgal.org/latest/Kernel_d/classCGAL_1_1Point__d.html
+#include <CGAL/Epick_d.h>
+
+#include <iostream>
+#include <string>
+#include <vector>
+
+using Kernel = CGAL::Epick_d< CGAL::Dynamic_dimension_tag >;
+using Point_d = Kernel::Point_d;
+
+void usage(char * const progName) {
+  std::cerr << "Usage: " << progName << " inputFile.off" << std::endl;
+  exit(-1);
+}
+
+int main(int argc, char **argv) {
+  if (argc != 2) {
+    std::cerr << "Error: Number of arguments (" << argc << ") is not correct" << std::endl;
+    usage(argv[0]);
+  }
+
+  std::string offInputFile(argv[1]);
+  // Read the OFF file (input file name given as parameter) and triangulate points
+  Gudhi::Points_off_reader<Point_d> off_reader(offInputFile);
+  // Check the read operation was correct
+  if (!off_reader.is_valid()) {
+    std::cerr << "Unable to read file " << offInputFile << std::endl;
+    usage(argv[0]);
+  }
+
+  // Retrieve the triangulation
+  std::vector<Point_d> point_cloud = off_reader.get_point_cloud();
+
+  int n {0};
+  for (auto point : point_cloud) {
+    std::cout << "Point[" << n << "] = ";
+    for (int i {0}; i < point.dimension(); i++)
+      std::cout << point[i] << " ";
+    std::cout << "\n";
+    ++n;
+  }
+  return 0;
+}
diff --git a/example/common/CMakeLists.txt b/example/common/CMakeLists.txt
new file mode 100644
index 00000000..0da3dcc0
--- /dev/null
+++ b/example/common/CMakeLists.txt
@@ -0,0 +1,17 @@
+cmake_minimum_required(VERSION 2.6)
+project(Common_examples)
+
+# need CGAL 4.7
+if(CGAL_FOUND)
+  add_executable ( cgal3Doffreader CGAL_3D_points_off_reader.cpp )
+  target_link_libraries(cgal3Doffreader  ${Boost_SYSTEM_LIBRARY} ${CGAL_LIBRARY})
+  add_test(cgal3Doffreader ${CMAKE_CURRENT_BINARY_DIR}/cgal3Doffreader ${CMAKE_SOURCE_DIR}/data/points/tore3D_300.off)
+
+  if (NOT CGAL_VERSION VERSION_LESS 4.7.0)
+    if (EIGEN3_FOUND)
+      add_executable ( cgaloffreader CGAL_points_off_reader.cpp )
+      target_link_libraries(cgaloffreader  ${Boost_SYSTEM_LIBRARY} ${CGAL_LIBRARY})
+      add_test(cgaloffreader ${CMAKE_CURRENT_BINARY_DIR}/cgaloffreader ${CMAKE_SOURCE_DIR}/data/points/alphacomplexdoc.off)
+    endif(EIGEN3_FOUND)
+  endif (NOT CGAL_VERSION VERSION_LESS 4.7.0)
+endif()
diff --git a/example/common/cgal3Doffreader_result.txt b/example/common/cgal3Doffreader_result.txt
new file mode 100644
index 00000000..f992c8e3
--- /dev/null
+++ b/example/common/cgal3Doffreader_result.txt
@@ -0,0 +1,8 @@
+Point[1] = (0.959535, -0.418347, 0.302237)
+Point[2] = (2.16795, 1.85348, -0.52312)
+Point[3] = (-2.38753, -1.50911, -0.565889)
+Point[4] = (-2.70428, -1.25688, 0.188394)
+Point[5] = (-1.22932, -1.64337, -0.998632)
+...
+Point[300] = (-0.56244, 2.6018, -0.749591)
+
diff --git a/example/common/cgaloffreader_result.txt b/example/common/cgaloffreader_result.txt
new file mode 100644
index 00000000..1deb8dbd
--- /dev/null
+++ b/example/common/cgaloffreader_result.txt
@@ -0,0 +1,7 @@
+Point[0] = 1 1 
+Point[1] = 7 0 
+Point[2] = 4 6 
+Point[3] = 9 6 
+Point[4] = 0 14 
+Point[5] = 2 19 
+Point[6] = 9 17